How can climate change be prevented or reduced?

Answer 1

By having global greenhouse gas emissions peak by around 2020, and thereafter head to zero by the end of the century.

Governments are using a variety of policy approaches, such as carbon taxes, renewable energy subsidies, and coal phaseout, in an effort to meet the goal of no more than 2C of warming that was established in Paris last year.

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Answer 2

Reduce the human population drastically and quickly. Using the guideline of other popular benchmarks, why not set a goal of pre-1900 population?

The main cause of the issue is the population growth of humans; halt and reverse it, and all other related issues will be avoided or lessened. This is because the majority of the concerns are related to the effects of human population growth and activities.

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Answer 3

It cannot be prevented, only reduced. This is accomplished by reducing the amount of energy from the sun or increase the amount of heat the Earth emits.

Whoa, that's a difficult question. I'll respond by discussing climate change in light of what I believe you are interested in knowing.

First, lowering solar energy. This sounds a little science fiction, but it is being considered. Basically, we would put a shield of some kind—think of a pretty parasol—between the Earth and the sun. There are a lot of details that need to be worked out, such as how much solar energy we should block.

The more sensible solutions involve increasing the amount of heat that the Earth emits; essentially, we can do this by raising the Earth's albedo, or reflectivity, or by decreasing the atmosphere's greenhouse effect. These solutions can be applied on a large or small scale by any individual on the planet; I'll give you some examples of what an individual can do.

The easiest way to raise the albedo of the Earth is for an individual to replace the roofing on their home. Light grey shingles reflect sunlight more than black shingles do. If you are installing a driveway, use light colored concrete or paving stones instead of black asphalt. You could also break up an abandoned asphalt parking lot in your city and replace it with vegetation.

There are two main ways to lessen the greenhouse effect: either reduce the amount of greenhouse gases you release into the atmosphere (e.g., CO2 and CH4), which can be easily done by running fewer combustion engines and eating less meat (as farm animals can produce a lot of methane). Alternatively, and this is the simplest method because it requires no major lifestyle changes, plant a tree (as trees absorb more CO2 than grass over the same area). Another great idea is to replace a fence with a hedge.

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Answer 4

Trees

The process of photosynthesis removes #CO_2# from the atmosphere so by planting more trees we can reduce the amount of #CO_2#. The other greenhouse gases are not increasing at the same alarming rate so it is likely that this act alone can solve the problem.

Before anyone thinks this is an easy fix, let me just point out how many trees are probably going to be needed. The South American rainforest peaked in 1492, which is a good time to look at because there was no forestry in either North or South America before then. Over the course of the last 500+ years, we have removed (and not replanted) about 4 BILLION acres of trees. This means that every person on the planet would probably need to plant 100 trees, which is obviously unlikely to happen, but every little bit helps.

That amount of trees would remove about 12 billion tons of #CO_2# from the atmosphere every year. That would hit the target of the Kyoto protocol.
Methane has the potential of becoming a much larger problem if we do not get the #CO_2# reduced fairly quickly. Warming of the Earth means thawing of the permafrost. If the permafrost thaws then it will decompose which produces methane. The problem with methane is there is no easy way to get it out of the atmosphere. It is naturally removed by various reactions with other gases. We cannot really speed that up. The other problem with methane is it is 30 (roughly) times more absorptive than #CO_2#.

The lesson from the story is to plant trees as soon as possible.

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Answer 5

Reduce greenhouse gas emissions, transition to renewable energy sources, enhance energy efficiency, promote sustainable practices in agriculture and forestry, and foster international cooperation on climate policies.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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